Quincy Compressor QED 650, Instruction And Maintenance Manual

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Ref. Description
S1 High-pressure switch
S2 Flow switch
T1 Transformer, control voltage
TT89 Temperature sensor, freeze protection
TT90 Temperature sensor, dryer LAT block
Y1 Solenoid valve
1X0 Terminal strip, supply
1X1 Terminal strip, motor
1X3 Terminal strip, earthing
1X5 Terminal strip, < or = 24 VAC
1X6 Terminal strip, < or = 24 VDC
1X7 Terminal strip, voltage-free contacts
(1) Customer installation
(2) For connection, see transformer label
(3) Voltage-free contacts
Dryer protection
The unit is provided with a phase sequence relay (K25).
The high-pressure shut-down switch (S1) stops the compressor motor when the pressure in the refrigerant
circuit reaches the upper set-point of the switch.
After tripping:
• The switch must be reset manually by pressing its reset knob and by accessing the protection menu, on
the
Air Logic Controller
, and pressing the Enter key.
The compressor motor has a built-in thermic protection. If the thermic protection trips, the compressor motor
will be stopped. The compressor will restart when the motor windings have cooled down, which may take up
to 3 hours.
Instruction book
28 2920 1818 00